Method and apparatus for making large area two-dimensional grids
US5949850A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1997 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Jun 19, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Methods for making large area grids consisting of focused and unfocused holes in sheets of metal. The grid consists of thin metal walls surrounding hollow openings. The projection of all walls converge to a focal spot in the focused grid, and on parallel or substantially parallel in an unfocused grid. A grid having a large area is made by interlocking together smaller grid pieces. A tall device is made by stacking layers of focused grids. Methods to make unfocused grids that detect parallel incoming x-rays are also described. The opening of the grid can be filled with phosphor or other scintillating materials to make a integrated grid/scintillator structure. These grids can also be applied to many applications such as x-ray antiscatter for diagnostic medical imaging, non-destructive testing, x-ray collimation, filters for liquids or electromagnetic radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.